Malicious PDF — malware analysis report

Static analysis result for SHA-256 69029e0201814b3b…

MALICIOUS

PDF

78.7 KB Created: 2021-03-29 13:01:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 9f7ac425631b6139ec4d5f77dae52d38 SHA-1: 1eb33f9387d46c0ed7773812c7fd6692ff5ac324 SHA-256: 69029e0201814b3bb12e30843ecb4f01814ec92fbb37c04340d6b81a411c9ea5
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a large number of external links, many hosted on disposable domains, characteristic of a link farm or SEO spam campaign. The primary URL, 'https://fokemale.ru/wix?keyword=modern+masters+booster+box', suggests a lure related to collectible items, likely to redirect users to a phishing or malware site. The ML classifier and ClamAV detection strongly indicate malicious intent, likely involving the exploitation of PDF vulnerabilities or social engineering to lead users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://fokemale.ru/wix?keyword=modern+masters+booster+box PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4373992/normal_5fd2d083a13f9.pdfIn PDF document text
    • https://winomumamo.weebly.com/uploads/1/3/1/0/131070375/zawukamu-nogem-ruxutaguzezef.pdfIn PDF document text
    • https://liwigudujonaj.weebly.com/uploads/1/3/5/3/135383521/9052472.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496816/normal_60400f5092756.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447095/normal_5fcaeba80d4b2.pdfIn PDF document text
    • http://pawezujexas.mywebcommunity.org/betiruzugusutujibemulexa.pdfIn PDF document text
    • https://verorepu.weebly.com/uploads/1/3/4/7/134774070/6057565.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473375/normal_5fc691d0e53c4.pdfIn PDF document text
    • http://zamowafa.mywebcommunity.org/bioethics_in_biotechnology.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483836/normal_603637b2a6c57.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401545/normal_605e01ecc5ec5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408863/normal_60164a65b1faf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471958/normal_5fccf5d4ac7fa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480590/normal_603c56b4ad28c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393763/normal_6024af13ca51a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379859/normal_60052a71542b1.pdfIn PDF document text
    • https://gulufoge.weebly.com/uploads/1/3/0/7/130776817/pokilisopanu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://lejiletuvasipib.onlinewebshop.net/vogorotapexote.pdfIn PDF document text
    • http://kozogasivufi.myartsonline.com/rental_agreement_format_in_tamil_download.pdfIn PDF document text
    • http://nuwadolonopip.onlinewebshop.net/98790784270.pdfIn PDF document text
    • http://dapibudajemuk.atwebpages.com/wakemowubutebokudap.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e807.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE807 4892 bytes
SHA-256: 1fc47b7cf6ea09a9aff52b4fda254b2ecea7bd43f2c5b7662455186bdc3f99c0
font_01_sfnt_off0000f882.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF882 10808 bytes
SHA-256: 00d4e875ab0b37808b646194b99c358b9700342f83ebb0eac76c084dccc880f7
font_02_sfnt_off00011d50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D50 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c